Answer:
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
I produce wool and spit a lot
I tell people to be careful when handling boxes.
Who is your mother's only sister's son's brother's aunt's daughter's sister's father?
What kind of room has no doors or windows?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.